Resist the urge to do aerobics or even cardio. You should actually be allowing your body to rest. However, light exercise is suggested. Light meaning: your heart rate should be just under 100 beats per minute. Try basic pilates or yoga. If that feels uncomfortable, stop and rest. Make sure to drink lots of liquids while doing so.
Well I don't think so. At this point your body needs rest so it can properly heal and recover itself. To do exercise and tire yourself out would just make it more difficult and would make you feel worse.
You should avoid any strenuous activity when you have a viral infection. You can worsen the situation and spread the virus faster. Remember that your body is already under strain fighting off the virus and does not need the added strain of physical activity. Strenuous activity when you have an infection can lead to complications.